Inventor · disambiguated record
Heikki I. Helava
Also filed as: HELAVA HEIKKI · HELAVA HEIKKI I
10 granted patents·2 pending applications·237 citations·filing 1981–2019
90Inventor score
Top patents by PatentIndex Score
12 records- 0193US7056383B2Tantalum based crucibleFOX GROUP INC·Filed 2004·Granted Jun 6, 2006·46 cites·44 claims
- 0289US6428621B1Method for growing low defect density silicon carbideFOX GROUP INC·Filed 2001·Granted Aug 6, 2002·41 cites·32 claims
- 0387US6508880B2Apparatus for growing low defect density silicon carbideFOX GROUP INC·Filed 2001·Granted Jan 21, 2003·24 cites·40 claims
- 0479US6534026B2Low defect density silicon carbideFOX GROUP INC·Filed 2001·Granted Mar 18, 2003·35 cites·14 claims
- 0578US6890809B2Method for fabricating a P-N heterojunction device utilizing HVPE grown III-V compound layers and resultant deviceTECHNOLOGIES AND DEVILES INTER·Filed 2002·Granted May 10, 2005·34 cites·29 claims
- 0678US4494043AImploding plasma devicePHYSICS INT CO·Filed 1981·Granted Jan 15, 1985·41 cites·5 claims
- 0776US9716202B2Optically activated linear switch for radar limiters or high power switching applicationsUNIV MISSOURI·Filed 2013·Granted Jul 25, 2017·4 cites·22 claims
- 0874US6863728B2Apparatus for growing low defect density silicon carbideFOX GROUP INC·Filed 2002·Granted Mar 8, 2005·12 cites·16 claims
- 0968US10790405B2Optically controlled power devicesUNIV MISSOURI·Filed 2019·Granted Sep 29, 2020·0 cites·20 claims
- 1066US2013334537A1Optically Controlled Power DevicesUNIV MISSOURI·Filed 2013·Application pending·0 cites
- 1153US2006174826A1Tantalum based crucibleFOX GROUP INC·Filed 2006·Application pending·0 cites
- 1241US9728660B2Optically-triggered linear or avalanche solid state switch for high power applicationsUNIV MISSOURI·Filed 2013·Granted Aug 8, 2017·0 cites·16 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →